Ninety-one years ago today, Tennessee became the 36th state to ratify the 19th Amendment, ensuring women the right to vote.

The amendment became law on Aug. 26, 1920 when the ratification was certified.

It's hard to believe that American women have been able to vote for less than a century.

It was a hard-fought victory.

Women began working for the right to vote in the early 1800s, and the women's suffrage amendment was first introduced in Congress in 1878. Those who campaigned for its passage were heckled, jailed and sometimes even beaten.

For a more upbeat version of events, check out Schoolhouse Rock's most magnificent "Sufferin' til Suffrage" episode.

And women, be sure to vote!